常见的词性转换：
1.pollute (v.) –pollution (u. n.)
2.enter (v.) – entrance (c. n.)
3.relate (v.) –relative (c. n.)
4.decide (v.) – decision (c. n.)
5.discuss (v.) – discussion (c. n.)
6.happy (a.)—happily (adv.) – happiness (u. n.)
7.interview (v.) – interview (c. n.) (注意：interviewing，一般情况下“w, x, y, z”不双写)
8.help (v.) – help (u. n) – helpful (a.) – helpless (a.) 没有帮助的
9.one (a.) -- one (n.) – once (adv.) – first (a./ adv.) (注意：one做可数名词使用时，指代前面提过的可数名词单数， ones 指代复数。)
10.meet (v.) – meeting (c. n.) 会议
登快阁11.welcome (v.) – welcome (c.n)
12.library (c.n.) – librarian (c. n.) 图书管理员
13.u (v.) – reu (v.) –uful (a.) – ufully (adv.)– u (u. n)用途
14.cost (v.) – cost (n.) 费用 (注意： cost- cost – cost)
15.person (c.n.) – people (pl. n.) – personal (a.) 个人的，私人的
16.cret (c. n.) –cretary (c. n.) (注意：辅音+y结尾，需把 “y” 改为 “-ies” ： cretaries)
17.assist (v.) – assistant (c. n.) `
18.active (a.) – activity (n.) (注意：辅音+y结尾，需把 “y” 改为 “-ies” ： activities)
19.luck (u. n) – lucky (a.) – luckily (adv.)
20.visit (v.) – visit (c. n.) – visitor (n.) ( 注意： “参观者” 是or结尾的，visiting 不要双写)
21.talk (v.) -- talk (c. n.)
圣罗兰专柜22.drive (v.) – driver (c.n.)
23.teach (v.) – teacher (c.n) (注意：teach sb. sth. 必须使用宾格代词e.g: teach us maths)
24.cook (v.) – cook (c.n.) 厨师 (注意： cooker 是厨具)
25.promi (v.) – promi (c. n.)
26.lie (v. ) – lie (c. n) – liar (c. n) 撒谎者
27.poem (n.) –poet (n.) 诗人
28.plan (v.) -- plan (c. n.) (注意: planning)
29.play (v.) – play (c. n.) 戏剧 – player (n.)
30.anger (n.) – angry (a.) – angrily (adv.)
31.hard (a.) – hard (adv.) 刻苦努力地 (注意: 千万不要写成hardly (adv.) 几乎不)
32.kind (c. n. ) -- kind (a.) – kindness (u.n.) 善良
33.cycle (v. ) – cycling (n.) –cyclist (c. n.) 骑自行车的人
34.shop (v.) -- shop (c. n.) – shopping (u.n)
35.travel (v.) -- travelling (u. n.)
36.friend (c. n. ) – friendly (a.) – friendship (u. n) 友谊
37.week (c. n.) –weekend (c. n) 在周末 (注意：at weekends / at the weekend)
38.sand (u. n.) – sandy (a.)
39.star (c. n.) – starry (a.)
40.sun (c. n.)– sunny (a. )
41.cloud (c. n.) – cloudy (a.)
42.wind (c. n.) – windy (a.)
43.rain (u. n. )—rainy (a.)
44.different (a.) －differently (adv.) – difference (u.n.) 区别，不同之处
45.two (a.) – twice (adv.) – cond (n. / a. / adv.)
46.three (a.) – third (adv. / a.) – three times
47.nine (a.) – ninth (a./ adv.) (注意： 与九有关的单词，只有 “第九” 不含有字母“e”)
48.five (a. ) – fifth (a. / adv.) (注意：-ve 必须改变成 -fth 变成序数词)
49.twelve (a.) – twelfth (a. /adv.)
50.twenty (a.) – twentieth (a./ adv.) (注意：-y必须改变成 -ieth 变成序数词)
51.work (v.) – work (u. n.) – worker (n.)
52.invite (v.) – invitation (c.n)
53.arrive (v.) – arrival (n.) 到达
54.adverti (v.) – advertiment (c. n)
55.hou (c. n.) – housing (u. n.)
56.swim (v./ c. n. ) – swimming (u. n.) – swimmer (c. n.)
57.quiet (a.) – quietly (adv.)
58.eat (v. ) – eating (u. n.)
59.cross (v.) – across (prep.)
60.final (a.) – finally (adv.)
61.wait (v.) –waiter (c.n.) – waitress (c.n.)
62.act (v.) – actress (c.n.) – actor (c.n.)
63.late (a.) –late (adv.) (注意：不要使用lately, “lately”表示 “最近”, 与现在完成时连用)
64.far (a.) – far (adv.) (注意：比较级farther –最高级 farthest)
65.fry (v.) – fried (a.)
66.bake (v.) – baked (a.) – baker (c. n.) 面包师—bakery (c. n. ) 面包房
67.freeze (v.) – frozen (a.)--freezing (a.) =cold寒冷的
68.salt (u.n. )—salty (a.)
69.sweet (c. n.) – sweet (a.)
70.spice (u.n.) 香料—spicy (a.)
71.taste (v. / n.) – tasty (a.)
72.drink (v.) – drink (n.)--soft drinks
73.prepare (v.) – preparation (n.) 准备
74.choo (v.) – choice (c. n.) 选择
75.fun (u. n.)—funny (a.) (注意：what fun, how funny)
76.health (u.n. ) – healthy (a.) – healthily (adv.)
桌面图标不见了怎么恢复77.steam (v.) – steamed (a.)
78.boil (v.) – boiled (a.)
79.barbecue (v.) – barbecued (a.)
80.run (v. / n. ) – runner (c. n.)
柱子装修效果图81.mean (v.) – meaning (u. n.)
82.exit (v.) – exit (c.n.)
byby83.favourite (a.) – favourite (c. n.) 特别喜爱的人或物
名词变复数形式
1.tooth (c.n.) – teeth (pl. n.)
2.policeman ( c.n.) –policemen (pl. n.)
3.postman (c.n.) – postmen (pl. n.)
4.fireman (c.n.) – firemen (pl.n.)
桑葚干有什么功效
5.actress (c. n.) – actress (pl.n.)
6.woman driver – women drivers
痛风是怎么引起的7.bus driver – bus drivers
反义词：
1.杨存中lucky (a.) – unlucky (a.)
2.luckily (a.) – unluckily (adv.)
3.far away from – near (prep.)
4.happy (a.) – unhappy (a.)
5.ever (adv.) – never (adv. )
6.always (adv.) – never (adv.)
7.healthy (a.) – unhealthy (adv.)
8.noisy (a.) – quiet (a.)
9.keep (v.) – break (v.)
10.obey (v.) – disobey (v.)
11.good (a.) – bad (adv.)
12.well (a.) -- sick (a.)
13.above (prep.) – below (prep.)
从肯定变否定句/ 疑问句时常见的转换词：
1.some (a. ) – any (a. ) (一般疑问句中， 如果含有情态动词， some一般不要改变成any)
